Very few people stomp grapes anymore for commercial winemaking. There are some wineries that still do it, I've heard of several in burgundy. Maybe some really old world stuff in Eastern Europe. The problem is that is super messy. Grapes are very sweet and when that juice dries on you, it is very sticky. Machines are much more efficient at crushing and pressing these days and don't cost a whole lot and last a lifetime. I can't name anyone off the top of my head. A quick google search didn't turn up anything either.
As for they hygienic part, grapes are full of bird poop, dead bugs, spider webs, dirt. I've found dead birds, bird nests, dead lizards, snakes, you name it in grapes and vineyards. So, dirty feet don't really have much on all this dirty natural stuff. It's all moot anyways because the alcohol level in wine is high enough to kill any pathogen that makes it way on the grapes. So, you are safe from that standpoint.